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All results from a given calculation for C3H8O2 (Propylene glycol)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-267.985174
Energy at 298.15K-267.995151
Nuclear repulsion energy194.283198
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3512 3369 3.22      
2 A 3373 3236 48.09      
3 A 3151 3023 29.18      
4 A 3147 3019 19.57      
5 A 3141 3013 9.18      
6 A 3065 2941 22.95      
7 A 3058 2934 27.89      
8 A 2949 2829 74.58      
9 A 1563 1499 6.05      
10 A 1542 1480 5.78      
11 A 1537 1475 8.47      
12 A 1477 1417 74.68      
13 A 1452 1393 18.00      
14 A 1401 1345 21.03      
15 A 1390 1334 19.13      
16 A 1381 1325 33.37      
17 A 1338 1284 20.05      
18 A 1237 1187 16.70      
19 A 1170 1122 5.47      
20 A 1106 1061 17.04      
21 A 1068 1025 40.69      
22 A 1008 967 60.42      
23 A 954 915 12.60      
24 A 922 885 18.12      
25 A 852 817 12.13      
26 A 709 680 158.57      
27 A 526 505 14.98      
28 A 470 451 21.87      
29 A 388 372 89.98      
30 A 358 343 11.82      
31 A 265 254 2.88      
32 A 225 216 0.33      
33 A 151 145 5.71      

Unscaled Zero Point Vibrational Energy (zpe) 24941.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23929.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/3-21G*
ABC
0.28858 0.12142 0.09391

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.301 1.378 -0.145
H2 0.697 1.445 -0.226
O3 1.913 -0.058 -0.039
H4 2.170 -0.099 0.920
C5 0.659 -0.816 -0.189
H6 0.527 -0.920 -1.268
H7 0.710 -1.808 0.277
C8 -0.481 0.037 0.378
H9 -0.414 0.023 1.482
C10 -1.849 -0.466 -0.057
H11 -1.902 -0.466 -1.151
H12 -2.038 -1.477 0.322
H13 -2.624 0.208 0.321

Atom - Atom Distances (Å)
  O1 H2 O3 H4 C5 H6 H7 C8 H9 C10 H11 H12 H13
O11.00322.64053.06912.39452.68833.36831.44972.12062.40912.64123.37422.6431
H21.00321.94262.42262.26152.59063.29181.93222.48523.18813.35614.03993.5865
O32.64051.94260.99381.47242.04382.14702.43162.78103.78443.99444.21394.5595
H43.06912.42260.99382.00632.85752.33792.70912.64694.15274.58304.46854.8415
C52.39452.26151.47242.00631.09271.09741.53262.15582.53652.75812.82433.4773
H62.68832.59062.04382.85751.09271.79172.15473.05622.70552.47323.06923.7054
H73.36833.29182.14702.33791.09741.79172.19822.46272.90893.26472.76843.8963
C81.44971.93222.43162.70911.53262.15472.19821.10671.52172.14732.17312.1512
H92.12062.48522.78102.64692.15583.05622.46271.10672.16103.06422.49692.5040
C102.40913.18813.78444.15272.53652.70552.90891.52172.16101.09531.09621.0944
H112.64123.35613.99444.58302.75812.47323.26472.14733.06421.09531.79161.7735
H123.37424.03994.21394.46852.82433.06922.76842.17312.49691.09621.79161.7835
H132.64313.58654.55954.84153.47733.70543.89632.15122.50401.09441.77351.7835

picture of Propylene glycol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C8 C5 106.782 O1 C8 H9 111.397
O1 C8 C10 108.318 H2 O1 C8 102.419
O3 C5 H6 104.678 O3 C5 H7 112.516
O3 C5 C8 108.016 H4 O3 C5 107.296
C5 C8 H9 108.454 C5 C8 C10 112.291
H6 C5 H7 109.791 H6 C5 C8 109.167
H7 C5 C8 112.349 C8 C10 H11 109.192
C8 C10 H12 111.178 C8 C10 H13 109.549
H9 C8 C10 109.598 H11 C10 H12 109.677
H11 C10 H13 108.183 H12 C10 H13 109.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.577      
2 H 0.350      
3 O -0.550      
4 H 0.356      
5 C -0.221      
6 H 0.248      
7 H 0.201      
8 C -0.031      
9 H 0.182      
10 C -0.614      
11 H 0.222      
12 H 0.197      
13 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.688 -2.180 1.629 2.807
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.610 1.897 3.322
y 1.897 -33.000 0.140
z 3.322 0.140 -29.360
Traceless
 xyz
x -0.430 1.897 3.322
y 1.897 -2.515 0.140
z 3.322 0.140 2.945
Polar
3z2-r25.891
x2-y21.390
xy1.897
xz3.322
yz0.140


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 131.634
(<r2>)1/2 11.473